A diagram of TeX engines using the clever smartdiagram package.

Edit and compile if you like:
% A diagram of TeX engines% Author: Stefan Kottwitz% https://www.packtpub.com/hardware-and-creative/latex-cookbook\documentclass[border=10pt]{standalone}\usepackage{smartdiagram}\usepackage{metalogo}\usepackage{dtklogos}\begin{document}\smartdiagram[bubble diagram]{\TeX\ engines,\TeX\ (dvi), pdf\TeX, \XeTeX, \LuaTeX, Con\TeX t}\end{document}
Click to download: smart-bubbles.tex • smart-bubbles.pdf
Open in Overleaf: smart-bubbles.tex